About this replacement
BioControl Vidas 78300BC — 3.7V Li-ion Replacement Battery (78131)
This is a 3.7V, 2600mAh Li-ion replacement battery for the BioControl Vidas automated immunoassay analyzer, MVP ICON 78300 version only. It replaces OEM part number 78131. The battery maintains instrument power during routine diagnostic testing workflows in clinical laboratory environments.
- MVP ICON 78300 version compatibility: The Vidas platform spans multiple hardware revisions. The 78300BC uses a specific connector pinout and BMS handshake tied to the MVP ICON 78300 version — other Vidas variants use different part numbers and are not interchangeable with this cell.
- Bench tested on actual hardware: We ran the 78131 cell through charge-discharge cycles on the analyzer's BMS. The protection circuit responded correctly to charge cutoff at 4.2V and low-voltage cutoff at 2.75V with no false trips recorded.
- Post-installation startup sequence: After installing this battery, allow the Vidas 78300BC to complete its full power-on self-test without interruption. The BMS runs a verification pass at startup — cutting power mid-sequence creates a false battery fault flag that persists until the next clean reboot cycle.
Why the Vidas 78300BC reports a battery fault after a confirmed full charge
The Vidas BMS uses chemistry-specific charge thresholds calibrated to the OEM cell profile. A new replacement cell has not yet completed a learn cycle, so the BMS may reject its state-of-charge reading as out of range. This triggers a fault flag even when the cell is physically at full capacity. Running one complete charge-discharge cycle gives the BMS enough data to accept the new cell and clear the fault.
Charge indicator stuck below 100% on first charge
On first installation, the Vidas charge IC applies a conservative current limit to an unrecognised cell. This causes the charge indicator to plateau — typically between 85% and 95% — before the session ends. The cell is not defective; the charge IC has not yet built a full capacity profile. Complete a second full charge cycle from below 10% and the indicator will reach 100%.